The symmetry problem in α′-NaV2O5

被引：4

作者：

Damascelli, A

van der Marel, D

Jegoudez, J

Dhalenne, G

Revcolevschi, A

机构：

[1] Univ Groningen, Solid State Phys Lab, NL-9747 AG Groningen, Netherlands

[2] Univ Paris Sud, Chim Solide Lab, F-91405 Orsay, France

来源：

PHYSICA B-CONDENSED MATTER | 1999年 / 259-61卷

关键词：

alpha '-NaV2O5; CuGeO3; spin-Peierls transition; charged magnons;

D O I：

10.1016/S0921-4526(98)00648-6

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We discuss the symmetry of alpha'-NaV2O5 in the high temperature phase on the basis of optical conductivity data. Conclusive information cannot be obtained by studying the optically allowed lattice vibrations. However, intensity and polarization of the electronic excitations give a direct indication for a broken-parity electronic ground-state. This is responsible for the detection of charged bi-magnons in the optical spectrum. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

收藏

页码：978 / 980

页数：3

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